# Copyright 2016 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import logging
import os

from flask import Flask
import scipy.misc

app = Flask(__name__)


# [START scipy]
@app.route('/')
def resize():
    """Demonstrates using scipy to resize an image."""
    app_path = os.path.dirname(os.path.realpath(__file__))
    image_path = os.path.join(app_path, 'assets/google_logo.jpg')
    img = scipy.misc.imread(image_path)
    img_tinted = scipy.misc.imresize(img, (300, 300))
    output_image_path = os.path.join(
        app_path, 'assets/resized_google_logo.jpg')
    # Write the tinted image back to disk
    scipy.misc.imsave(output_image_path, img_tinted)
    return "Image resized."
# [END scipy]


@app.errorhandler(500)
def server_error(e):
    logging.exception('An error occurred during a request.')
    return """
    An internal error occurred: <pre>{}</pre>
    See logs for full stacktrace.
    """.format(e), 500


if __name__ == '__main__':
    # This is used when running locally. Gunicorn is used to run the
    # application on Google App Engine. See entrypoint in app.yaml.
    app.run(host='127.0.0.1', port=8080, debug=True)
